| Name | Gymnosporangium japonicum Dietel & P. Sydow |
| Authorship | Dietel & P. Sydow |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Gymnosporangium |
| Citation | 1899 Hedwigia 38(Beibl.): 141 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Gymnosporangium japonicum Dietel & P. Sydow |
| Identification made in | 1933 (1) |